JP2019117672A5 - - Google Patents

Download PDF

Info

Publication number
JP2019117672A5
JP2019117672A5 JP2017249831A JP2017249831A JP2019117672A5 JP 2019117672 A5 JP2019117672 A5 JP 2019117672A5 JP 2017249831 A JP2017249831 A JP 2017249831A JP 2017249831 A JP2017249831 A JP 2017249831A JP 2019117672 A5 JP2019117672 A5 JP 2019117672A5
Authority
JP
Japan
Prior art keywords
head
distance
read head
read
write
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2017249831A
Other languages
English (en)
Japanese (ja)
Other versions
JP2019117672A (ja
JP6813474B2 (ja
Filing date
Publication date
Application filed filed Critical
Priority to JP2017249831A priority Critical patent/JP6813474B2/ja
Priority claimed from JP2017249831A external-priority patent/JP6813474B2/ja
Priority to CN201810612292.2A priority patent/CN109961805B/zh
Priority to US16/112,922 priority patent/US10529365B2/en
Publication of JP2019117672A publication Critical patent/JP2019117672A/ja
Publication of JP2019117672A5 publication Critical patent/JP2019117672A5/ja
Application granted granted Critical
Publication of JP6813474B2 publication Critical patent/JP6813474B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

JP2017249831A 2017-12-26 2017-12-26 磁気ディスク装置及びリード／ライトオフセット補正方法 Active JP6813474B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2017249831A JP6813474B2 (ja) 2017-12-26 2017-12-26 磁気ディスク装置及びリード／ライトオフセット補正方法
CN201810612292.2A CN109961805B (zh) 2017-12-26 2018-06-14 磁盘装置及读/写偏移修正方法
US16/112,922 US10529365B2 (en) 2017-12-26 2018-08-27 Method for correcting position offset of the heads on two dimensional magnetic recording device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017249831A JP6813474B2 (ja) 2017-12-26 2017-12-26 磁気ディスク装置及びリード／ライトオフセット補正方法

Publications (3)

Publication Number Publication Date
JP2019117672A JP2019117672A (ja) 2019-07-18
JP2019117672A5 true JP2019117672A5 (enrdf_load_stackoverflow) 2020-03-12
JP6813474B2 JP6813474B2 (ja) 2021-01-13

Family

ID=66951381

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2017249831A Active JP6813474B2 (ja) 2017-12-26 2017-12-26 磁気ディスク装置及びリード／ライトオフセット補正方法

Country Status (3)

Country Link
US (1) US10529365B2 (enrdf_load_stackoverflow)
JP (1) JP6813474B2 (enrdf_load_stackoverflow)
CN (1) CN109961805B (enrdf_load_stackoverflow)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019160377A (ja) 2018-03-15 2019-09-19 株式会社東芝 磁気ディスク装置及びヘッド位置の補正方法
JP2020047342A (ja) 2018-09-19 2020-03-26 株式会社東芝 磁気ディスク装置及びヘッド位置の補正方法
JP2020091931A (ja) 2018-12-07 2020-06-11 株式会社東芝 磁気ディスク装置及びリニアリティ誤差の補正方法
JP7166165B2 (ja) * 2018-12-27 2022-11-07 株式会社東芝 磁気ディスク装置及びリード処理方法
JP7170561B2 (ja) 2019-03-08 2022-11-14 株式会社東芝 磁気ディスク装置、サーボセクタのライト方法、及びサーボ復調位置の補正方法
JP7225059B2 (ja) * 2019-08-22 2023-02-20 株式会社東芝 磁気ディスク装置
JP7225156B2 (ja) * 2020-03-23 2023-02-20 株式会社東芝 磁気ディスク装置
JP7516128B2 (ja) 2020-06-23 2024-07-16 株式会社東芝 磁気ディスク装置及びリード処理方法
JP7404285B2 (ja) * 2021-02-16 2023-12-25 株式会社東芝 磁気ディスク装置、及びライト処理方法
JP7592561B2 (ja) 2021-06-22 2024-12-02 株式会社東芝 磁気ディスク装置、及びライト動作の停止方法
US11955140B2 (en) 2022-01-06 2024-04-09 International Business Machines Corporation Reducing deviation of read head position between writing and reading in a magnetic tape
US11942122B1 (en) 2023-01-17 2024-03-26 Kabushiki Kaisha Toshiba Determining absolute position on HDD spiral patterns using dual TDMR readers

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6754030B2 (en) * 2001-06-27 2004-06-22 Seagate Technology Llc Optimal reader-to-writer offset measurement of a head in a disc drive for reduced track misregistration
JP2005141874A (ja) * 2003-11-10 2005-06-02 Matsushita Electric Ind Co Ltd 磁気ディスク装置
JP2010061706A (ja) * 2008-09-01 2010-03-18 Fujitsu Ltd 間隔測定方法及び装置、並びに記憶装置
JP2010146626A (ja) * 2008-12-17 2010-07-01 Toshiba Storage Device Corp 記憶装置、記憶装置制御方法およびヘッドスライダ
US7948706B2 (en) * 2009-06-10 2011-05-24 International Business Machines Corporation Apparatus and method to adjust the orientation of a read head to correct for dynamic skew
JP2011134372A (ja) 2009-12-22 2011-07-07 Samsung Electronics Co Ltd 磁気信号再生装置および磁気信号再生方法
WO2015009718A1 (en) * 2013-07-16 2015-01-22 Marvell World Trade Ltd. Systems and methods for calibrating read and write operations in two dimensional magnetic recording
US8824083B1 (en) * 2013-07-31 2014-09-02 Oracle International Corporation Calibration system for limiting tape head assembly positioning errors during data writing and reading of tape in tape drive
JP2015079550A (ja) * 2013-10-15 2015-04-23 株式会社日立ハイテクファインシステムズ 熱アシスト磁気ヘッド検査方法及び熱アシスト磁気ヘッド検査装置
CN104715762A (zh) * 2013-12-13 2015-06-17 株式会社东芝 磁盘装置及读写偏移的修正方法
US8896959B1 (en) * 2014-02-18 2014-11-25 Kabushiki Kaisha Toshiba Magnetic disk apparatus and data recording method
US9099132B1 (en) * 2014-02-25 2015-08-04 Avago Technologies General Ip (Singapore) Pte. Ltd. Systems and methods for multi-head separation determination
US9019650B1 (en) * 2014-04-30 2015-04-28 Seagate Technology Llc Multi-stage actuator with writer position determination capability
CN105989862B (zh) * 2014-12-19 2018-11-27 株式会社东芝 磁盘装置及区带边界跨越判定方法
US9373355B1 (en) * 2015-01-30 2016-06-21 Seagate Technology Llc Compensating for interference via a multi-reader system
US9564157B1 (en) 2015-08-21 2017-02-07 Seagate Technology Llc System and method for detecting reader-writer offset in a heat-assisted magnetic recording head
US10020017B2 (en) * 2015-08-27 2018-07-10 Kabushiki Kaisha Toshiba Hard disk drive and head positioning method
CN106816160B (zh) * 2015-11-30 2019-04-05 株式会社东芝 磁盘装置及其控制方法
CN106887243B (zh) * 2015-12-15 2019-12-03 株式会社东芝 盘驱动器以及位置修正方法
US9875758B1 (en) * 2016-10-12 2018-01-23 Seagate Technology Llc Slider utilizing multiple transducer sets
US10014026B1 (en) * 2017-06-20 2018-07-03 Seagate Technology Llc Head delay calibration and tracking in MSMR systems
US9972349B1 (en) * 2017-08-30 2018-05-15 Western Digital Technologies, Inc. Data storage device with two read elements offset radially by at least one servo track at all radial locations

Similar Documents

Publication Publication Date Title
JP2019117672A5 (enrdf_load_stackoverflow)
US10741206B2 (en) Magnetic disk device and head position correction method
US8693134B1 (en) Alternating wedge repeatable runout (WRRO) pattern
CN101354902B (zh) 刷新区段中的区域来维持主机命令的目标吞吐量的磁盘驱动器
US8792200B1 (en) Disk drive employing a temperature dependent write offset
US7974029B2 (en) Disk drive biasing refresh zone counters based on write commands
US8699172B1 (en) Disk drive generating off-track read capability for a plurality of track segments
WO2017116763A3 (en) Adaptive reference scheme for magnetic memory
US9230605B1 (en) Data storage device maximizing areal density based on a target quality metric
US20200090700A1 (en) Magnetic disk device and write processing method
US10020017B2 (en) Hard disk drive and head positioning method
JP2011073286A5 (enrdf_load_stackoverflow)
US9349400B1 (en) Magnetic recording disk drive with adjustable data track pitch and compensation for repeatable runout (RRO)
US9093091B1 (en) Determination of reader to writer crosstrack offset via a magnetic disk
US9117479B1 (en) Data storage device calibrating laser write power for heat assisted magnetic recording
US9728214B2 (en) Disk drive and position correction method
US9761258B2 (en) Servo parameterization for multi-sensor reader
WO2008149411A1 (ja) 記憶装置、記憶装置のプロセッサ及びプログラム
US20190287566A1 (en) Magnetic disk device and refresh processing method
US20150302876A1 (en) Data storage apparatus and method for correcting repeatable runout
US8559126B2 (en) Method and apparatus for positioning a magnetic-recording head
JP2021039812A (ja) 磁気ディスク装置及び磁気ディスク装置の制御方法
US8941939B1 (en) Disk drive using VCM BEMF feed-forward compensation to write servo data to a disk
US8891194B1 (en) Disk drive iteratively adapting correction value that compensates for non-linearity of head
US10115422B2 (en) Hard disk drive, manufacturing method of the same, and servo data writing method